Neco Model Questions Vol1 2017 Biology Question 17
Practice objective / multiple choice question 17 from the 2017 Neco Model Questions Vol1 Biology examination.
Two desert plant species differ in leaf adaptations. Species A has a stomatal density of 200 mm⁻², leaf thickness of 0.20 mm and a permeability constant of 0.8. Species B has a stomatal density of 120 mm⁻², leaf thickness of 0.15 mm and a permeability constant of 0.9. Assuming the same vapour‑pressure gradient for both, water‑loss rate is proportional to \(\dfrac{\text{density}\times k}{\text{thickness}}\). Which species shows the more effective xerophytic adaptation and by what percentage is its water‑loss rate lower than that of the other species?
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This is Neco Model Questions Vol1 2017 Biology Question 17. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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